San Esteban and Puerto Cabello, Carabobo, Venezuela.
Hitherto treated as conspecific with B. culicivorus and B. auricapilla, but differs from former in its grey vs olive-grey upperparts and ear-coverts (2); yellow vs orange coronal stripe (2); whitish vs yellow loral line, and whitish vs yellowish-olive supercilium (3); white vs yellow undertail-coverts (ns); song a series of repeated, almost identical notes covering a very large frequency range, reaching 9–11 kHz, thus differing in its much higher maximum frequency (3) and lower number of different note shapes (2)#R; and from B. auricapilla by its grey vs olive-green upperparts and ear-coverts (3); yellow vs orange coronal stripe (2); grey vs pale buff hindcrown and nape (1); white vs yellow undertail-coverts (ns); song with a single note shape (1) and all notes at high pitch (2). Four subspecies recognized.
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